Kitchen drainboard



FIG. 1 is a perspective view of a kitchen drainboard, showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof; the rear view being a mirror image of the front view;

FIG. 4 is a left side edge view thereof;

FIG. 5 is a right side edge view thereof; and

FIG. 6 is a bottom view thereof. 

The ornamental design for a kitchen drainboard, as shown and described. 